Author: Ed Schröder
Date: 01:42:00 10/15/99
To enrich the discussion about the value of the "Permanent Brain" (PB) I have started 2 experiments with Rebel Century (RC) which will give some data for a better judgement of the value (in elo) of the permanent brain. Thinking it all over I still believe that the best way to provide data is to test the SAME program (PB_ON) versus (PB_OFF). Arguments: #1. Both programs are equal in strength. #2. There is no single evidence (yet) that the % of predicted moves is higher playing the same program. Rebel (or any other program) percentage against Program_X might be 25% and against Program_Y 75% and against itself maybe 50%, nobody knows. The final result: Experiment-1: RC (PB=ON) vs RC (PB=OFF) 100 auto232 games Time control: 60 secs average. Hardware: 4xPII-266 + 2xPII-450 Result: 61-39 Experiment-2: RC (PB=ON) vs RC (PB=OFF) 100 auto232 games Time control: RC (PB=ON) 30 sec average Time control: RC (PB=OFF) 60 sec average Hardware: 4xPII-266 + 2xPII-450 Status: 57-43 I find the 57-43 result quite shocking. I expected (and hoped for) a close win for the PB_ON version but not a clear victory. I think it would be a wise thing if others are willing to do the same experiment with other programs. Somehow I have the feeling you will totally different results doing so. Ed Schroder
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